Door-check.



no. 678,389. Y Patented my 23, lem.

G. w. mALLonY.

DOOR CHECK.

(Application flied Nov. 5, 1900.)

(No Model.)

UNITED STATES PATENT OEETCE.

GEORGE l/V.' MALLORY, OF GUILDS, CANADA.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent No. 678,889, dated July 23, 1901.

Application filed November 5, 1900. Serial No. 35,453. (No model.)

T0 all 1071/0777, t may concern-.-

Be it known that I, GEORGE W. MALLORY, a subject of the Queen of Great Britain, residing at Guilds, Province of Ontario, and Dominion of Canada, have inven ted certain new and useful Improvements in Door-Checks, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to new and .useful improvements in door-checks, and has for its object to provide a door-check which does not depend upon the thickness of the door for actuating it, but is applicable to any door and will close the same perfectly; and to this end the invention consists in the use of a springactuated arm journaled in a bracket secured to the door-casing and a plate carried by the door adapted to strike said arm and set the same in motion to close the door; and the invention further consists in the peculiar construction, arrangement, and combinationof parts, all as more fully hereinafter described, and shown in the accompanying drawings, in which- Figure lis a front elevation of my improved door-check with the door closed. Fig. 2 is a front elevation with the door as in the act of being closed. Fig. 3 is a plan View of Fig. l. Fig. 4 is a plan view of Fig. 2. Fig. 5 is a section through the antifriction-roller.

As shown in the drawings, A is the door, and B the door-casing, to which the bracket C is attached, which bracket is preferably made of malleable iron, with the arms a h bent at right angles thereto and provided at their outer ends with the open bea-rings c and the stop-pins CZ c, respectively.

D is a crank-shaft laid in the bearings c, and after which the open ends of said bearings are bont over the shaft to pivotally hold the same in place, the opposite ends of said shaft being provided with the curved arm f, carrying an antifriction-roller g at its outer end, and the short arm h, extending in the opposite direction on the opposite end of the shaft and having a hook t' at its outer end adapted to strike against the stop-pin e when the curved arm is thrown back.

E is a spring connecting the base of the bracket with the crank-shaft at a point j, and it will be seen that the U-shaped portion of the crank-shaft is bent slightly out ofv line with the arrnf, so as to hold the same, through the medium of the spring, in its extended position, as shown in Figs. 2 and 4.

F is a sheet-metal plate adj ustably secured to the doorA in operative relation to the roller g and atitslower end is provided with a curved lip or fiange k, adapted to strike the roller as the door is swung closed and carry the crankshaft D over the center, when the spring E, through the medium of the curved armf, will hold the door closed, as shown in Figs. 1 and 3, and as the door is opened the rollg, through the medium of the armf, will throw the crankshaft over the center line, in which position it will be held by the spring until the door is again swung closed.

It Will thus be seen that my door-check acts upon and is actuated by one side of the door only, thus not being affected by the varying thickness of doors. The stop-pin cl is for the purpose of keeping a slight tension on the spring E when the parts are packed for shipping or in the store, so that the parts will not rattle loose and become lost, and to aid the purchaser in attaching it properly to the door.

I preferably countersinkthe upper portion of the roll g, as shown in Fig. 5, so that said roll will not bind on the curved portion of the arm. l Y

As shown in the drawings, it will be seen that the coactin g parts of the checking device are located at or near the meeting edges of the door and jamb in operative relation to each other, and, if desired, I may attach the springarm to the inside of the door and the lip to the inside of the door-casing instead of as shown in the drawings, as the parts are entirely reversible, thus enabling my device to be applied to any door.

Having thus fully described my invention, what I desire to secure by Letters Patent is l. In a door-checking device located at or near the meeting edges of the door and jamb, the combination of a bracket, a spring-actuated shaft'journaled in the bracket, a presserarm extending from said shaft, and a plate or lip for actuating the presser-arm upon Jche inward movement of the door, substantially as described. Y

2. In a door-checking device located at or near the meeting edges of the door and jamb,

IOO

the combination of a bracket, a crank-shaft j ournaled in said bracket, aspring connected to the crank, a presser-arm extending from one end of the shaft, a finger from the other end, and a stop to limit the movement of the shaft in one direction, and a plate or lip in operative relation for actuating the presserarm by the inward movement of the door, substantially as described. s

3. In a door-checking device located at or near the meeting edges of the door and jamb';

4. In a .door-checking devicelocated at or near Athe meeting edges ofthe door and jamb, the combination of the bracket having arms ct b, a crank-shaft journaled in the ends of said arms, a spring E at one end connect- .ingwvith the erank.- shaft andA connected at vthe other end to the'bracket, of the curved presser-arm f at one end of the crank-shaft, the antifriction-roller g thereon, the arm h at the other end of the shaft, the'stop e with which the arm his adapted to engage, and the plate F with which the arm f is adapted to n engage substantially as and Jfor the purpose described.

In testimony whereof I affix my signature 35 in presence of two Witnesses. GEORGE W. Witnesses:

OTTO F. BARTHEL, JOSEPH A. NoELKE.

MALLORY. 

